Helium walks into a bar.
He orders a drink and wonders why his parents decided to give him such an unusual name, as he can never find it on personalized souvenirs. Plus, baristas never, ever get it right.
Since the bartender is not a chemist, he has no idea that H2O2 is the chemical formula for hydrogen peroxide, and gives both chemists a glass of water. Expecting that one to end a little differently, too? If you’re unfamiliar, this is the (rather dark) way that joke usually ends. Plus, check out some more brainy and hilarious science jokes.